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Start Over Subjects Burnett, Swan M. (Swan Moses), 1847-1906. ✖Remove constraint Subjects: Burnett, Swan M. (Swan Moses), 1847-1906. Subjects Optometry ✖Remove constraint Subjects: Optometry Titles Dr. Swan M. Burnett's models, demonstrative of cylindrical refraction ✖Remove constraint Titles: Dr. Swan M. Burnett's models, demonstrative of cylindrical refraction

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